Collatinus

the son of Egerius, who was the son of Aruns, the brother of Tarquinius Priscus. When the town of Collatia was taken by Tarquinius Priscus, Egerius was left in command of the place (Liv. 1.38), and there his son also resided, whence he received the surname of Collatinus. He was married to Lucretia, and it was the rape of the latter by his cousin, Sex. Tarquinius, that led to the dethronement of Tarquinius Superbus, and the establishment of the republic, B. C. 509. Collatinus and L. Junius Brutus were the first consuls; but as the people could not endure the rule of any of the hated race of the Tarquins, Collatinus was persuaded by his colleague and the other nobles to resign his office and retire from Rome. He withdrew with all his property to Lavinium, and P. Valerius Poplicola was elected in his place. (Liv. 1.57-60, 2.2 ; Dionys. A. R. 4.64, &c.; Dio Cass. Frag. 24, ed. Reimar; Cic. de Rep. 2.25, de Off. 3.10.)

Grandson of Aruns, elder brother of Tarquinius Priscus. He derived his surname from Collatia, where he resided, and with the principality of which he was invested. Collatinus was the husband of the celebrated Lucretia (q.v.), and after the expulsion of the Tarquins, he and Brutus were elected the first consuls. His relationship, however, to the Tarquin family excited distrust, and when a law was passed banishing the whole Tarquinian house he was forced to lay down his office and depart from Rome. He ended his days at Lavinium (Liv.i. 60).